Table 1.
Subject characteristics and differences between stable weight group and weight loss groups. Subjects were divided into groups based on BMI changes over 48 months.
| All | stable weight 1 |
weight loss 5-10%1 |
weight loss > 10%1 |
P-value 5-10% weight loss vs. stable weight group |
P-value >10% weight loss group vs. stable weight group |
|
|---|---|---|---|---|---|---|
| n | 516 (100%) | 258 (50.0%) | 180 (34.9%) | 78 (15.1%) | ||
| Age (years; mean ± SD) |
62.4 ± 9.2 | 62.3 ± 8.9 | 62.5 ± 9.4 | 62.4 ± 9.7 | 1.0 3 | 1.0 3 |
| Sex (females; n (%)) |
314 (60.9%) | 156 (60.5%) | 109 (60.6%) | 49 (62.8%) | 1.0 2 | 0.7 2 |
| Baseline BMI (kg/m2; mean±SD) |
30.3 ± 3.5 | 30.2 ± 3.5 | 30.2 ± 3.5 | 30.7 ± 3.6 | 1.0 3 | 0.9 3 |
| WOMAC pain (mean ± SD) |
2.0 ± 2.6 | 1.8 ± 2.7 | 1.9 ± 2.7 | 2.1 ± 2.5 | 0.6 3 | 0.3 3 |
| WOMAC disability (mean ± SD) |
1.5 ± 1.2 | 1.4 ± 1.1 | 1.5 ± 0.9 | 1.7 ± 1.4 | 0.6 3 | 0.2 3 |
| WOMAC stiffness (mean ± SD) |
6.8 ± 9.6 | 6.7 ± 9.3 | 6.9 ± 9.3 | 7.4 ± 9.8 | 0.8 3 | 0.1 3 |
| Baseline KL Score |
||||||
| KL = 0 (n (%)) |
204 (39.5%) | 107 (41.5%) | 70 (38.9%) | 27 (34.6%) | 0.7 | 0.5 |
| KL = 1 (n (%)) |
213 (41.3%) | 102 (39.5%) | 77 (42.8%) | 34 (43.6%) | 0.8 | 0.6 |
| KL = 2 (n (%)) |
61 (11.8%) | 30 (11.6%) | 22 (12.2%) | 9 (11.5%) | 0.3 | 0.4 |
| Kl = 3 (n (%)) |
38 (7.4%) | 19 (7.4%) | 11 (6.1%) | 8 (10.2%) | 0.8 | 0.3 |
1
Subjects in the three different groups are matched in terms of age, sex, baseline BMI and baseline KL Score
2
Pearson's chi-squared test
3
ANOVA